function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		preloadFlag = true;
	}
}

function popup(data,width,height) {
 var winwidth = (screen.width - width) / 2;
 var winheight = (screen.height - height) / 2;
 NW2=window.open(data,"W2","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,top="+winheight+",left="+winwidth+",height="+height+",width="+width); 
 setTimeout('NW2.focus();',250);
}